1899992106 has 32 divisors (see below), whose sum is σ = 4336322880. Its totient is φ = 616213008.

The previous prime is 1899992089. The next prime is 1899992117. The reversal of 1899992106 is 6012999981.

1899992106 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473476 + ... + 477471.

It is an arithmetic number, because the mean of its divisors is an integer number (135510090).

Almost surely, 2^1899992106 is an apocalyptic number.

1899992106 is an abundant number, since it is smaller than the sum of its proper divisors (2436330774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1899992106 is a wasteful number, since it uses less digits than its factorization.

1899992106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950995 (or 950989 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The square root of 1899992106 is about 43588.8988849225. The cubic root of 1899992106 is about 1238.5606143276.

The spelling of 1899992106 in words is "one billion, eight hundred ninety-nine million, nine hundred ninety-two thousand, one hundred six".